************ Official 39XX Overclocking Thread ************

Rossi~ that's pretty much identical to mine (tho I have played with the RAM yet so it's at stock). My temps hit around 74 on cores 0 and 5 while the others are up to 10 degrees lower, although I still want to redo the paste. There seems almost no practical difference between the H80 on medium and your air.

I've gone down to 4.2 for a quiet life for now, mid-60s under full load at around 1.225 vcore (1.215v set but 25% LLC). While 4.5 is stable, it gets too noisy and I can't live with that :)
 
eyetrip said:
Reseated last night (AGAIN!!!)

Mine is 3152B502 from Costa Rica (favourite place in the world)
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Hmmm, different Batch# to mine.. That may explain a few things.

I just received some new fans
Additional 140mm fan for the Phanteks :)
Replacement 140mm top exhaust
Replacement 120mm rear exhaust
The old rear exhaust will go in the bottom as an intake.

Should give me some much better temperatures :)
 
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Rossi~ said:
Additional 140mm fan for the Phanteks :)
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Got another of those as well. Difference to temps? Nada.

I still feel I have a temp issue... maybe I am expecting too much, but am sure I'm not.

One thing I thought of is that I removed the "backplate" for attaching 2011 coolers so that I could attach the 1366 bracket for the coolers I had, and maybe when putting the 2011 backplate back on again, I did not secure it enough or something.

Of course, I will have to be careful not to overdo/tighten it, but will give it a try tonight redoing that.

Have done much reading of forums and peoples temps on 3930ks and air coolers, that I am positive I should be seeing better than have seen on ND14 or the Phanteks.

Thing that makes me think this the most is that people use similar clocks, but with much higher voltage than I have been trying, and see better results.

But I am getting so so so so so tried of reseating coolers now.
 
eyetrip said:
Got another of those as well. Difference to temps? Nada.


One thing I thought of is that I removed the "backplate" for attaching 2011 coolers so that I could attach the 1366 bracket for the coolers I had, and maybe when putting the 2011 backplate back on again, I did not secure it enough or something.
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My current 120mm fan i put on there as the third dropped them by 3-4c, i'm not expecting any more improvements when swapping it out for the 140mm but it's mainly for drop in noise as it's a bit whiney. Also the looks :)

If you've swapped out the backplate then yes that could be the issue! I have problems when changing the backplate on my last setup, turns out i hadn't mounted it properly and was slightly loose also.
Try reattaching the backplate. You should be getting some really sweet temperatures with the low voltages you're running.
 
Hmmm, also just discovered have left out on thing which has been making mounting more difficult for me - the base screws on with a thumb screw, and I have had it on loose (obviously finding it very fiddly), but I sweat I didn't see a hole for screwing the plate on to...
 
By George! I think I got it!

So, as I have an almost daily habit of doing, I re-seated this morning, but also reconnected the backplate, making sure to tighten up (hopefully not too much).

I also discovered, as someone in another thread did, that the fan splitter that came with my phanteks was only powering one fan! So the middle fan was not spinning!

Went for a combination blob/line application of MX2.

Currently, running at 4.7GHz with 1.304V (under load) - 1.312V according to CPUZ. May need to still bump this a notch.

But peak have now seen is 82, whereas with previous testing it would always get to the high 80's.

I can live with a peak in the low 80's - sure most of you would balk at the idea :D

Though I still don't get how my coolest core can be a whole max of 69C???

I do STILL think that these temps for these volts are higher than they should be by a couple of degrees.

Ambient 21.5 according to thermo.

Don't suppose MX2 performs slightly better after a few hours/days?

This is currently with my mem only at 1600. Hopefully upping that won't push it up any higher...
 
eyetrip said:
By George! I think I got it!

So, as I have an almost daily habit of doing, I re-seated this morning, but also reconnected the backplate, making sure to tighten up (hopefully not too much).

I also discovered, as someone in another thread did, that the fan splitter that came with my phanteks was only powering one fan! So the middle fan was not spinning!

Went for a combination blob/line application of MX2.

Currently, running at 4.7GHz with 1.304V (under load) - 1.312V according to CPUZ. May need to still bump this a notch.

But peak have now seen is 82, whereas with previous testing it would always get to the high 80's.

I can live with a peak in the low 80's - sure most of you would balk at the idea :D

Though I still don't get how my coolest core can be a whole max of 69C???

I do STILL think that these temps for these volts are higher than they should be by a couple of degrees.

Ambient 21.5 according to thermo.

Don't suppose MX2 performs slightly better after a few hours/days?

This is currently with my mem only at 1600. Hopefully upping that won't push it up any higher...
Click to expand...

69c - 82c = There is a problem. 13c?! There is no way a CPU can be that far out between cores surely?! That sounds like the heatsink is mounted incorrectly or one side at a time. Mine is out by about 5c tops.

There is no cure time with MX series of TIM. and i haven't noticed any difference over time with my MX-3
 
I know 13C seems crazy... but no matter what I have done, I have always had a rather large variation...

I just don't know if I have the will to try AGAIN... I think it the last 3 weeks I must have re-seated coolers about 50 times. And I wish that was an exaggeration :(
 
Am settling for this

Been priming blending for a while now and max temp was 81C.

If I am bored next weekend, I might reseat the cooler (again), but kind of had enough for now.

Just want to get back to actually using my PC.

Still, despite temps, I do think I have a great chip what with running 4.7GHz at 1.3V :D

Couple of things I noticed today:

Since running off my newly bought UPS, I have seen a total of 1 BSOD with all the settings changing I have been doing. Previously, I was seeing plenty. May be a fluke though.

Running at a lower multiplier and upping the bclk seems to allow for lower volts at a given frequency.

With a 47 multi at 100 bclk, it would generally take around 1.32V.

With 45 multi and 104.5 bclk I have brought this down to the 1.3V above.

PS - max variation in temps under prime blend is 10C
 
Definitely cooler with that extra Phanteks on there :) Shame i didn't have the extra black pins for the fan clips... my bodge job worked though :D

p10001951.jpg
 
Turns out my GPU's didn't like the bclk OC, so have gone back to 47 x 100

However, I did, once again, reseat, but using spread method, and was a bit more generous with TIM.

Plus, I had the top front fan placement intaking air. I changed this to top rear exhaust.

Temps now more than good enough to keep me happy. Decided to install Asus AI suite to monitor temps, and that has a single CPU temp, which means there is far less for me to worry about.

According to that, temps don't get above about 73/74C on very high IBT.

If I average out the max temps from coretemp (just for comparison sake) over the same period, it comes to 77.6C.

So I feel one day I can push 4.8 :D
 
eyetrip said:
I know 13C seems crazy... but no matter what I have done, I have always had a rather large variation...

I just don't know if I have the will to try AGAIN... I think it the last 3 weeks I must have re-seated coolers about 50 times. And I wish that was an exaggeration :(
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Mine is similar core 1 is always around 9/10 deg hotter than the rest, this is under water too. From reading around it seems it's quite common; most heatsinks/waterblocks are made with quad cores in mind (they all tend to be slightly bowed) and cannot make a consistent contact with with all cores on the die of a 6 core. I wouldn't worry about it too much.
 
eyetrip said:
Am settling for this

Been priming blending for a while now and max temp was 81C.

If I am bored next weekend, I might reseat the cooler (again), but kind of had enough for now.

Just want to get back to actually using my PC.

Still, despite temps, I do think I have a great chip what with running 4.7GHz at 1.3V :D

Couple of things I noticed today:

Since running off my newly bought UPS, I have seen a total of 1 BSOD with all the settings changing I have been doing. Previously, I was seeing plenty. May be a fluke though.

Running at a lower multiplier and upping the bclk seems to allow for lower volts at a given frequency.

With a 47 multi at 100 bclk, it would generally take around 1.32V.

With 45 multi and 104.5 bclk I have brought this down to the 1.3V above.

PS - max variation in temps under prime blend is 10C
Click to expand...

As BLK is pushed with these processors less modulation occurs in the processors Phase lock loop so a "cleaner" signal is provided to the CPU. Hence the lower Vcore required to stabalise the CPU Overclock.

Setting around 131 BLK for all my X79 CPU overclocking on the 1.25 strap and Vcore is universally less across the board at around this value.
 
Seems the sweet spot for me with nice temps and good vcore is a 4.5 overclock got it stable with a 1.290 Vcore could reduce that to 1.280-1.275 but I'm happy with the temps I'm getting.

Will see what I can get my Vcore down to at 4.8 and 5.0 as well seems that month of use is finally helping out my vcore reductions.
 
I have used two 3930k's both needed 1.52v (in the bios) to be stable at 5GHZ. BLCK 100 and 50x Multi. Temps were not an issue.
 
eyetrip said:
What are your temps and what are you using to monitor them?
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Real Temp GT 31-35 degrees idle and 66-73 degrees 100% load after 15 minutes that's at 4.5


as for 5.0 ghz I can't post stable at that although I didn't go past a 1.5 a little more juice and I'm sure I'd have been able to.


4.5 is actually what I'm now happy with considering the temps at 4.8 I was running a little hot.
 
@rosi, Hey just finished building my new rig, but on startup I get red MemOk!, using the same ram as you (Samsung Green) Did you have to tweak any setups or did it go straight to boot ? p.s. my screen doesn't even come on, just red led
 
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